CN218316943U - Vehicle body front longitudinal beam rear part connecting structure - Google Patents
Vehicle body front longitudinal beam rear part connecting structure Download PDFInfo
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- CN218316943U CN218316943U CN202222685729.XU CN202222685729U CN218316943U CN 218316943 U CN218316943 U CN 218316943U CN 202222685729 U CN202222685729 U CN 202222685729U CN 218316943 U CN218316943 U CN 218316943U
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- longitudinal beam
- rear portion
- vehicle body
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Abstract
The utility model discloses a longeron rear portion connection structure before automobile body, including the front longitudinal back portion, the front longitudinal back portion is the integrated into one piece structure, forms a plurality of cavitys on the front longitudinal back portion during the shaping, is equipped with a plurality of strengthening ribs in the cavity at front longitudinal back portion, is equipped with the overlap joint groove of being connected with peripheral part on the front longitudinal back portion, and the overlap joint groove is the integrated into one piece structure with the front longitudinal back portion. The rear part of the front longitudinal beam is made of AlSi10MnMg material and is integrally formed through high-pressure casting. The lap joint groove comprises a front baffle lower beam lap joint groove, a front longitudinal beam front lap joint groove and a threshold beam lap joint groove. The rear part of the front longitudinal beam of the vehicle body adopts a high-pressure cast aluminum structure, the threshold beam, the lower cross beam of the front baffle and the front beam of the front longitudinal beam are changed into lap joint from original mutual butt joint, the joint rigidity is improved, and three parts are integrated into one piece.
Description
Technical Field
The utility model belongs to the technical field of the automobile manufacturing, concretely relates to longeron rear portion connection structure before automobile body.
Background
With the stricter and stricter requirements on the environmental protection of the national automobile emission, the riding comfort of people for the automobile is higher and higher, and the light weight of the automobile and the integral bending rigidity of an automobile body need to be further improved. At present, a front longitudinal beam connecting structure of an automobile body is formed by mutually overlapping and fixing a front longitudinal beam body assembly, a right connecting plate, a longitudinal beam rear section, a left connecting plate, a longitudinal beam cover plate and a right front supporting bracket which are punched by steel plates through spot welding. The number of the parts is large, the lap joint structure is complex, and the welding process is complicated.
SUMMERY OF THE UTILITY MODEL
To the not enough that exists among the prior art, the utility model aims to provide a longeron rear portion connection structure before automobile body of simple structure, connection convenience, it is complicated to solve the many and overlap joint structure of part structure quantity, problem that welding process is loaded down with trivial details.
In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides a rear connecting structure of front longitudinal beam of automobile body, includes front longitudinal beam rear portion, the front longitudinal beam rear portion is the integrated into one piece structure, forms a plurality of cavitys on the front longitudinal beam rear portion during the shaping, is equipped with a plurality of strengthening ribs in the cavity at front longitudinal beam rear portion, is equipped with the overlap joint groove of being connected with peripheral component on the front longitudinal beam rear portion, and the overlap joint groove is the integrated into one piece structure with front longitudinal beam rear portion.
Furthermore, the rear part of the front longitudinal beam is made of AlSi10MnMg material and is integrally formed through high-pressure casting, and the rear part of the front longitudinal beam is subjected to T7 heat treatment.
Furthermore, a grid type reinforcing rib is further arranged in the cavity at the rear part of the front longitudinal beam, reinforcing rib table columns are arranged at the intersection points of the grid type reinforcing rib, and the reinforcing rib table columns are of a cavity structure.
Furthermore, a front baffle lower beam lap joint groove is formed in the rear portion of the front longitudinal beam, and the front baffle lower beam is connected with the front baffle lower beam lap joint groove and is installed on the rear portion of the front longitudinal beam.
Furthermore, a front longitudinal beam front lapping groove is formed in the rear portion of the front longitudinal beam, and the front portion of the front longitudinal beam is connected with the front lapping groove of the front longitudinal beam and is installed on the rear portion of the front longitudinal beam.
Furthermore, a threshold beam lap joint groove is further formed in the rear portion of the front longitudinal beam, and the threshold beam is connected with the threshold beam lap joint groove and is installed on the rear portion of the front longitudinal beam.
Furthermore, the front part of the front longitudinal beam, the lower cross beam of the front baffle, the threshold beam and the rear part of the front longitudinal beam are mutually connected together by structural adhesive and MIG welding, and a bolt is arranged between the threshold beam and the rear part of the front longitudinal beam and is connected with a nut in a matching way through a bolt.
Adopt the utility model discloses technical scheme's advantage does:
1. the rear part of the front longitudinal beam of the automobile body adopts a high-pressure cast aluminum structure, the threshold beam, the lower beam of the front baffle and the front beam of the front longitudinal beam are changed into lap joints from the original mutual butt joint, the joint rigidity is improved, and three parts are integrated into one part; and a plurality of grid reinforcing ribs for improving the structural rigidity performance are arranged in the cavity of the connecting structure of the front longitudinal beam of the automobile body.
2. The utility model discloses front longitudinal rear portion connection structure is through high-pressure casting integrated into one piece. With high-pressure casting integrated into one piece technique, replace traditional steel sheet metal structure welding assembly for the automobile body is lighter weight, optimizes automobile body part takt. The rear connecting structure of the cast aluminum front longitudinal beam is made of AlSi10MnMg, and the rear connecting structure of the cast aluminum front longitudinal beam is made of enough elongation and bending angle after being stretched and broken, so that the structure can have good plasticity, and the integration level of the structure is improved.
Drawings
The present invention will be described in further detail with reference to the following drawings and detailed description:
FIG. 1 is a schematic view of the connection structure of the rear part of the front longitudinal beam of the vehicle body;
FIG. 2 is a bottom schematic view of the rear connection structure of the front longitudinal beam of the vehicle body of the present invention;
FIG. 3 is a schematic view showing the lap joint between the rear connecting structure of the front longitudinal beam and the peripheral members of the present invention;
fig. 4 is a partially enlarged view of a portion a in fig. 3.
The labels in the above figures are respectively: 1. reinforcing ribs; 2. the lower beam lapping groove of the front baffle plate; 3. grid type reinforcing ribs; 4. reinforcing rib table posts; 5. the front part of the front longitudinal beam is provided with a lap joint groove; 6. a threshold beam lap joint groove; 7. a front part of the front longitudinal beam; 8, the rear part of the front longitudinal beam; 9. the front baffle lower beam; 10. threshold roof beam.
Detailed Description
In the present invention, it is to be understood that the term "length"; "Width"; "Up"; "Down"; "front"; "Back"; "left"; "Right"; "vertical"; "horizontal"; "Top"; "bottom" "inner"; "outer"; "clockwise"; "counterclockwise"; "axial"; "planar direction"; the directional or positional relationship indicated as "circumferential" or the like is based on the directional or positional relationship shown in the drawings, and is only for convenience of description and simplified description, and does not indicate or imply that the device or element referred to must have a particular orientation; constructed and operative in a particular orientation and therefore should not be construed as limiting the invention.
As shown in fig. 1 to 4, a connecting structure for a front longitudinal beam rear portion of a vehicle body comprises a front longitudinal beam rear portion 8, wherein the front longitudinal beam rear portion 8 is of an integrally formed structure, a plurality of cavities are formed in the front longitudinal beam rear portion 8 during forming, a plurality of reinforcing ribs 1 are arranged in the cavities of the front longitudinal beam rear portion 8, a lap joint groove connected with peripheral components is formed in the front longitudinal beam rear portion 8, and the lap joint groove and the front longitudinal beam rear portion 8 are of an integrally formed structure. The rear part 8 of the front longitudinal beam is made of AlSi10MnMg material and is integrally formed through high-pressure casting. The lap joint groove comprises a front baffle lower beam lap joint groove 2, a front longitudinal beam front lap joint groove 5 and a threshold beam lap joint groove 6. The rear part of the front longitudinal beam of the vehicle body adopts a high-pressure cast aluminum structure, the threshold beam, the lower cross beam of the front baffle and the front beam of the front longitudinal beam are changed into lap joint from original mutual butt joint, the joint rigidity is improved, and three parts are integrated into one piece.
The front longitudinal beam rear connecting structure is integrally formed through high-pressure casting. With high-pressure casting integrated into one piece technique, replace traditional steel sheet metal structure welding assembly for the automobile body is lighter weight, optimizes automobile body part takt. The rear connecting structure of the cast aluminum front longitudinal beam is made of AlSi10MnMg, and the rear connecting structure of the cast aluminum front longitudinal beam is made of enough elongation and bending angle after being stretched and broken, so that the structure can have good plasticity, and the integration level of the structure is improved.
And a grid type reinforcing rib 3 is also arranged in the cavity at the rear part 8 of the front longitudinal beam, reinforcing rib table columns 4 are arranged at the cross points of the grid type reinforcing ribs 3, and the reinforcing rib table columns 4 are of a cavity structure. A plurality of reinforcing ribs and grid reinforcing ribs for improving the structural rigidity performance are arranged in the cavity of the connecting structure of the front longitudinal beam of the automobile body.
The reinforcing ribs are reasonably designed in the cavity, and the reinforcing ribs are enabled to form a cavity net structure by optimizing the trend, the layout and the material thickness of the reinforcing ribs, so that the rigidity and the strength performance of the cavity net structure are further improved, the bending rigidity, the lightweight coefficient and the whole production rhythm of the new energy automobile can be effectively improved, and the product performance and the product qualification rate are improved. The mold ejector pin column bases, namely the reinforcing rib column bases, are designed at the cross points of the reinforcing ribs, so that the hot spot effect on the mold steel can be effectively reduced, the performance of the rear body of the front longitudinal beam can be further improved, the structural design of a steel mold is facilitated, the outline of a narrow conical die-casting mold is avoided, and the qualification rate of products is effectively improved.
The front longitudinal beam rear part 8 is provided with a front baffle lower beam overlapping groove 2, and a front baffle lower beam 9 is connected with the front baffle lower beam overlapping groove 2 and is arranged on the front longitudinal beam rear part 8. The front longitudinal beam rear part 8 is provided with a front longitudinal beam front overlapping groove 5, and the front longitudinal beam front part 7 is connected with the front longitudinal beam front overlapping groove 5 and is arranged on the front longitudinal beam rear part 8. And a threshold beam overlapping groove 6 is also formed in the rear part 8 of the front longitudinal beam, and a threshold beam 10 is connected with the threshold beam overlapping groove 6 and is installed on the rear part 8 of the front longitudinal beam. The front part 7 of the front longitudinal beam, the lower beam 9 of the front baffle, the threshold beam 10 and the rear part 8 of the front longitudinal beam are connected together by structural glue and MIG welding, and a bolt 13 is arranged between the threshold beam 10 and the rear part 8 of the front longitudinal beam and is connected with a nut in a matching way through a bolt.
The cast aluminum front longitudinal beam rear connecting structure overlapping groove is used for connecting the threshold beam, the longitudinal beam front part and the front baffle lower cross beam, so that the threshold beam, the longitudinal beam front part and the front baffle lower cross beam which are all hollow cylinders are ingeniously connected together. A plurality of reinforcing ribs used for improving the structural rigidity performance are arranged inside the cavity of the rear connecting structure of the cast aluminum front longitudinal beam, the reinforcing ribs form a net structure, and reinforcing rib pillars used for reducing the hot spot effect on the mold steel, namely mold thimble pillars, are arranged at the cross points of the reinforcing ribs. By implementing the technical scheme, the defects that in the prior art, the number of joint parts of the connecting structure at the rear part of the front longitudinal beam of the automobile body is large, the welding precision strength is low, and the improvement of the compression resistance and the bending rigidity of the automobile body of the new energy automobile is not facilitated are overcome. In order to further improve the plasticity of the structure, the product is subjected to T7 heat treatment, so that the shape and size change of the product can be kept within a specified range under the condition of long-term service, and the performance stability of the new energy automobile is ensured. The welding fixture, the checking fixture and the mould which are required by the traditional sheet metal cast aluminum front longitudinal beam rear connecting structure welding assembly are reduced, the process flow is reduced, the whole precision of the new energy automobile is improved, and the bending and twisting resistance of the front longitudinal beam rear connecting structure joint is improved.
The key stress point of the automobile body is at the joint of each part, and the strength of the stress point directly influences the bending rigidity of the whole automobile and the operation stability and the collision performance of the whole automobile. Because threshold roof beam, preceding baffle bottom end rail, the anterior roof beam of front longitudinal all are section bar cylinder cavity structure, unable mutual overlap joint can only dock the welding together, and the joint design is not strong, is unfavorable for guaranteeing whole car turn-round rigidity, the utility model discloses automobile body front longitudinal rear portion structure can improve the rigidity and the intensity that the automobile body key connects. Because the three parts are combined into one, the rear part of the front longitudinal beam of the automobile body has a simple structure, and the problem of large quantity of parts is solved. And the light weight coefficient of the vehicle body is also improved due to the high-pressure aluminum casting.
The utility model discloses the automobile body front longitudinal rear portion is through MIG welding, the structure is glued, the connected mode of spiro union, make its and threshold roof beam, preceding baffle bottom end rail, the firm ingenious connection of the anterior three section bar spare of front longitudinal together, this kind of connected mode not only can guarantee the firm connection of high pressure cast aluminium automobile body front longitudinal rear portion and part on every side, the structural rigidity of automobile body skeleton also can be guaranteed simultaneously, strengthen the anti kink rigidity of whole car, improve the nature controlled and durability and the reliability of whole car, welding process has been simplified, provide good basis for the nature controlled of vehicle. The utility model discloses simple structure, light in weight, the wide use that is fit for the lightweight automobile body.
The present invention is described above with reference to the accompanying drawings, it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements made by the technical solution of the present invention or the present invention is directly applied to other occasions without improvement, all within the protection scope of the present invention.
Claims (7)
1. The utility model provides a longeron rear portion connection structure before automobile body which characterized in that: including front longitudinal rear portion (8), front longitudinal rear portion (8) are the integrated into one piece structure, form a plurality of cavitys on front longitudinal rear portion (8) during the shaping, are equipped with a plurality of strengthening ribs (1) in the cavity of front longitudinal rear portion (8), are equipped with the overlap joint groove of being connected with peripheral part on front longitudinal rear portion (8), and the overlap joint groove is the integrated into one piece structure with front longitudinal rear portion (8).
2. A vehicle body front-side member rear connecting structure according to claim 1, characterized in that: the rear part (8) of the front longitudinal beam is made of AlSi10MnMg material and is integrally formed through high-pressure casting.
3. A vehicle body front side member rear connecting structure according to claim 1 or 2, wherein: the cavity of the rear part (8) of the front longitudinal beam is also internally provided with grid reinforcing ribs (3), the cross points of the grid reinforcing ribs (3) are provided with reinforcing rib posts (4), and the reinforcing rib posts (4) are of a cavity structure.
4. A vehicle body front side member rear connecting structure according to claim 3, wherein: and a front baffle lower beam overlapping groove (2) is formed in the rear part (8) of the front longitudinal beam, and a front baffle lower beam (9) is connected with the front baffle lower beam overlapping groove (2) and is installed on the rear part (8) of the front longitudinal beam.
5. A vehicle body front side member rear connecting structure according to claim 4, wherein: the front part of the front longitudinal beam is connected with the front part of the front longitudinal beam through the overlapping groove (5) at the front part of the front longitudinal beam (7) and is arranged at the rear part of the front longitudinal beam (8).
6. A vehicle body front side member rear connecting structure according to claim 5, wherein: and a threshold beam overlapping groove (6) is further formed in the rear portion (8) of the front longitudinal beam, and the threshold beam (10) is connected with the threshold beam overlapping groove (6) and is installed on the rear portion (8) of the front longitudinal beam.
7. A vehicle body front side member rear connecting structure according to claim 6, wherein: the front part (7) of the front longitudinal beam, the lower cross beam (9) of the front baffle plate, the threshold beam (10) and the rear part (8) of the front longitudinal beam are mutually connected together by adopting structural adhesive and MIG welding, and a bolt is arranged between the threshold beam (10) and the rear part (8) of the front longitudinal beam and is connected with a nut in a matching way through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222685729.XU CN218316943U (en) | 2022-10-12 | 2022-10-12 | Vehicle body front longitudinal beam rear part connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222685729.XU CN218316943U (en) | 2022-10-12 | 2022-10-12 | Vehicle body front longitudinal beam rear part connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218316943U true CN218316943U (en) | 2023-01-17 |
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ID=84823949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222685729.XU Active CN218316943U (en) | 2022-10-12 | 2022-10-12 | Vehicle body front longitudinal beam rear part connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218316943U (en) |
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2022
- 2022-10-12 CN CN202222685729.XU patent/CN218316943U/en active Active
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